89443aba5b
BUG=skia: R=robertphillips@google.com Author: reed@google.com Review URL: https://codereview.chromium.org/354133002
224 lines
9.0 KiB
C++
224 lines
9.0 KiB
C++
|
|
/*
|
|
* Copyright 2010 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
|
|
|
|
#ifndef SkGpuDevice_DEFINED
|
|
#define SkGpuDevice_DEFINED
|
|
|
|
#include "SkGr.h"
|
|
#include "SkBitmap.h"
|
|
#include "SkDevice.h"
|
|
#include "SkPicture.h"
|
|
#include "SkRegion.h"
|
|
#include "GrContext.h"
|
|
|
|
struct SkDrawProcs;
|
|
struct GrSkDrawProcs;
|
|
|
|
class GrTextContext;
|
|
|
|
/**
|
|
* Subclass of SkBaseDevice, which directs all drawing to the GrGpu owned by the
|
|
* canvas.
|
|
*/
|
|
class SK_API SkGpuDevice : public SkBaseDevice {
|
|
public:
|
|
enum Flags {
|
|
kNeedClear_Flag = 1 << 0, //!< Surface requires an initial clear
|
|
kCached_Flag = 1 << 1, //!< Surface is cached and needs to be unlocked when released
|
|
kDFFonts_Flag = 1 << 2, //!< Surface should render fonts using signed distance fields
|
|
};
|
|
|
|
/**
|
|
* Creates an SkGpuDevice from a GrSurface. This will fail if the surface is not a render
|
|
* target. The caller owns a ref on the returned device. If the surface is cached,
|
|
* the kCached_Flag should be specified to make the device responsible for unlocking
|
|
* the surface when it is released.
|
|
*/
|
|
static SkGpuDevice* Create(GrSurface* surface, unsigned flags = 0);
|
|
|
|
/**
|
|
* New device that will create an offscreen renderTarget based on the
|
|
* ImageInfo and sampleCount. The device's storage will not
|
|
* count against the GrContext's texture cache budget. The device's pixels
|
|
* will be uninitialized. On failure, returns NULL.
|
|
*/
|
|
static SkGpuDevice* Create(GrContext*, const SkImageInfo&, int sampleCount);
|
|
|
|
/**
|
|
* DEPRECATED -- need to make this private, call Create(surface)
|
|
* New device that will render to the specified renderTarget.
|
|
*/
|
|
SkGpuDevice(GrContext*, GrRenderTarget*, unsigned flags = 0);
|
|
|
|
/**
|
|
* DEPRECATED -- need to make this private, call Create(surface)
|
|
* New device that will render to the texture (as a rendertarget).
|
|
* The GrTexture's asRenderTarget() must be non-NULL or device will not
|
|
* function.
|
|
*/
|
|
SkGpuDevice(GrContext*, GrTexture*, unsigned flags = 0);
|
|
|
|
virtual ~SkGpuDevice();
|
|
|
|
GrContext* context() const { return fContext; }
|
|
|
|
virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE;
|
|
|
|
virtual SkImageInfo imageInfo() const SK_OVERRIDE {
|
|
return fRenderTarget ? fRenderTarget->info() : SkImageInfo::MakeUnknown();
|
|
}
|
|
|
|
virtual void clear(SkColor color) SK_OVERRIDE;
|
|
virtual void drawPaint(const SkDraw&, const SkPaint& paint) SK_OVERRIDE;
|
|
virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count,
|
|
const SkPoint[], const SkPaint& paint) SK_OVERRIDE;
|
|
virtual void drawRect(const SkDraw&, const SkRect& r,
|
|
const SkPaint& paint) SK_OVERRIDE;
|
|
virtual void drawRRect(const SkDraw&, const SkRRect& r,
|
|
const SkPaint& paint) SK_OVERRIDE;
|
|
virtual void drawDRRect(const SkDraw& draw, const SkRRect& outer,
|
|
const SkRRect& inner, const SkPaint& paint) SK_OVERRIDE;
|
|
virtual void drawOval(const SkDraw&, const SkRect& oval,
|
|
const SkPaint& paint) SK_OVERRIDE;
|
|
virtual void drawPath(const SkDraw&, const SkPath& path,
|
|
const SkPaint& paint, const SkMatrix* prePathMatrix,
|
|
bool pathIsMutable) SK_OVERRIDE;
|
|
virtual void drawBitmap(const SkDraw&, const SkBitmap& bitmap,
|
|
const SkMatrix&, const SkPaint&) SK_OVERRIDE;
|
|
virtual void drawBitmapRect(const SkDraw&, const SkBitmap&,
|
|
const SkRect* srcOrNull, const SkRect& dst,
|
|
const SkPaint& paint,
|
|
SkCanvas::DrawBitmapRectFlags flags) SK_OVERRIDE;
|
|
virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap,
|
|
int x, int y, const SkPaint& paint);
|
|
virtual void drawText(const SkDraw&, const void* text, size_t len,
|
|
SkScalar x, SkScalar y, const SkPaint&) SK_OVERRIDE;
|
|
virtual void drawPosText(const SkDraw&, const void* text, size_t len,
|
|
const SkScalar pos[], SkScalar constY,
|
|
int scalarsPerPos, const SkPaint&) SK_OVERRIDE;
|
|
virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,
|
|
const SkPath& path, const SkMatrix* matrix,
|
|
const SkPaint&) SK_OVERRIDE;
|
|
virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode, int vertexCount,
|
|
const SkPoint verts[], const SkPoint texs[],
|
|
const SkColor colors[], SkXfermode* xmode,
|
|
const uint16_t indices[], int indexCount,
|
|
const SkPaint&) SK_OVERRIDE;
|
|
virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
|
|
const SkPaint&) SK_OVERRIDE;
|
|
virtual bool filterTextFlags(const SkPaint&, TextFlags*) SK_OVERRIDE;
|
|
|
|
virtual void flush() SK_OVERRIDE;
|
|
|
|
virtual void onAttachToCanvas(SkCanvas* canvas) SK_OVERRIDE;
|
|
virtual void onDetachFromCanvas() SK_OVERRIDE;
|
|
|
|
virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE;
|
|
|
|
/**
|
|
* Make's this device's rendertarget current in the underlying 3D API.
|
|
* Also implicitly flushes.
|
|
*/
|
|
virtual void makeRenderTargetCurrent();
|
|
|
|
virtual bool canHandleImageFilter(const SkImageFilter*) SK_OVERRIDE;
|
|
virtual bool filterImage(const SkImageFilter*, const SkBitmap&,
|
|
const SkImageFilter::Context&,
|
|
SkBitmap*, SkIPoint*) SK_OVERRIDE;
|
|
|
|
class SkAutoCachedTexture; // used internally
|
|
|
|
|
|
protected:
|
|
virtual bool onReadPixels(const SkImageInfo&, void*, size_t, int, int) SK_OVERRIDE;
|
|
virtual bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) SK_OVERRIDE;
|
|
|
|
/** PRIVATE / EXPERIMENTAL -- do not call */
|
|
virtual void EXPERIMENTAL_optimize(const SkPicture* picture) SK_OVERRIDE;
|
|
/** PRIVATE / EXPERIMENTAL -- do not call */
|
|
virtual void EXPERIMENTAL_purge(const SkPicture* picture) SK_OVERRIDE;
|
|
/** PRIVATE / EXPERIMENTAL -- do not call */
|
|
virtual bool EXPERIMENTAL_drawPicture(SkCanvas* canvas, const SkPicture* picture) SK_OVERRIDE;
|
|
|
|
private:
|
|
GrContext* fContext;
|
|
|
|
GrSkDrawProcs* fDrawProcs;
|
|
|
|
GrClipData fClipData;
|
|
|
|
GrTextContext* fMainTextContext;
|
|
GrTextContext* fFallbackTextContext;
|
|
|
|
// state for our render-target
|
|
GrRenderTarget* fRenderTarget;
|
|
bool fNeedClear;
|
|
|
|
// remove when our clients don't rely on accessBitmap()
|
|
SkBitmap fLegacyBitmap;
|
|
|
|
// called from rt and tex cons
|
|
void initFromRenderTarget(GrContext*, GrRenderTarget*, unsigned flags);
|
|
|
|
virtual SkBaseDevice* onCreateDevice(const SkImageInfo&, Usage) SK_OVERRIDE;
|
|
|
|
virtual SkSurface* newSurface(const SkImageInfo&) SK_OVERRIDE;
|
|
|
|
// sets the render target, clip, and matrix on GrContext. Use forceIdenity to override
|
|
// SkDraw's matrix and draw in device coords.
|
|
void prepareDraw(const SkDraw&, bool forceIdentity);
|
|
|
|
/**
|
|
* Implementation for both drawBitmap and drawBitmapRect.
|
|
*/
|
|
void drawBitmapCommon(const SkDraw&,
|
|
const SkBitmap& bitmap,
|
|
const SkRect* srcRectPtr,
|
|
const SkSize* dstSizePtr, // ignored iff srcRectPtr == NULL
|
|
const SkPaint&,
|
|
SkCanvas::DrawBitmapRectFlags flags);
|
|
|
|
/**
|
|
* Helper functions called by drawBitmapCommon. By the time these are called the SkDraw's
|
|
* matrix, clip, and the device's render target has already been set on GrContext.
|
|
*/
|
|
|
|
// The tileSize and clippedSrcRect will be valid only if true is returned.
|
|
bool shouldTileBitmap(const SkBitmap& bitmap,
|
|
const GrTextureParams& sampler,
|
|
const SkRect* srcRectPtr,
|
|
int maxTileSize,
|
|
int* tileSize,
|
|
SkIRect* clippedSrcRect) const;
|
|
void internalDrawBitmap(const SkBitmap&,
|
|
const SkRect&,
|
|
const GrTextureParams& params,
|
|
const SkPaint& paint,
|
|
SkCanvas::DrawBitmapRectFlags flags,
|
|
bool bicubic,
|
|
bool needsTextureDomain);
|
|
void drawTiledBitmap(const SkBitmap& bitmap,
|
|
const SkRect& srcRect,
|
|
const SkIRect& clippedSrcRect,
|
|
const GrTextureParams& params,
|
|
const SkPaint& paint,
|
|
SkCanvas::DrawBitmapRectFlags flags,
|
|
int tileSize,
|
|
bool bicubic);
|
|
|
|
bool drawDashLine(const SkPoint pts[2], const SkPaint& paint);
|
|
|
|
static SkPicture::AccelData::Key ComputeAccelDataKey();
|
|
|
|
typedef SkBaseDevice INHERITED;
|
|
};
|
|
|
|
#endif
|